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A particular hydrogen like atom has its ...

A particular hydrogen like atom has its ground state binding energy = 122.4 eV . It is in ground state. Then,

A

its atomic number is 3

B

An electron of 90 eV can excite it

C

An electron of kinetic energy 91.8 eV can be brought to almost rest by this atom

D

An electron of KE nearly 2.6 eV may emerge from the atom when electron of KE 125 eV collisions with this atom.

Text Solution

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The correct Answer is:
A, C, D
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